The objectives window in particular looks pretty bad on 1024x768.
I think other people are working on presenting the information in that window in a better way, but it needs to be recentered in any case.
In D713, we kept the chat window centered at 50%-80. The other three windows (diplomacy, trade, objectives) have titles that stick out above the window, so they need to be centered a little lower: 50%-70 looks good.
I didn't change the objectives window's height, and only slightly changed the trade window's height.
The diplomacy window had a lot of unused space, so I adjusted its height to fit the number of players in the game.
When testing the objectives menu I wanted the map with the longest description (to see if there was a scroll bar). That turned out to be Latium, which turned out to be broken from rP20144, so I've added that tiny fix to this patch. The other maps have already been fixed.
In the first screenshot, "ALPHA XXIII : Ken Wood" on the top bar takes two lines, so I adjusted the spacing so it'd fit on one.